Microsoft Dynamics / Salesforce allow you to set up a data model without any code.
Turns out you still have to be able to model things, and understand the mental model for programming which is why people end up with hell on these systems.
Also, if you've gotten this far, plain text is actually a far more easy and convenient way to specify things.
Further, if you need to run such a system yourself, you'd still need to deal with the rest of it, which is just hidden to users, which we're developing tools for all the time.
Turns out you still have to be able to model things, and understand the mental model for programming which is why people end up with hell on these systems.
Also, if you've gotten this far, plain text is actually a far more easy and convenient way to specify things.
Further, if you need to run such a system yourself, you'd still need to deal with the rest of it, which is just hidden to users, which we're developing tools for all the time.